I would be interested in the answer too. I am even ok if I can choose members and assign them to groups (As network creator or Administrator).
Background: I have an alumni network. I want to be able to group members of my network into groups like passing year(2002, 2003, 2004..), Specialization area etc (Computers, Electronics)
Currently the member would have to voluntarily go join groups. This is very inefficient for completeness of a group.
With a custom sign in page that send's off a rewrite code off to an off Ning Server you may be able to do it. I can code this but it wouldn't be for my Standard price of 10$ it would be around 150$ because I would have to host it then edit it and it is about 6 week's of work that I would have to do in 4 weeks. E-Mail me ning.scripter@yahoo.com
Thanks,
The Ning Scripter
AKA Josh